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Ilimaussaq intrusive complex
The Ilimaussaq intrusive complex is a large alkalic layered intrusion located on the southwest coast of Greenland. It is Mesoproterozoic in age, about 1.16 Ga. It is the type locality of agpaitic nepheline syenite and hosts a variety of unusual rock types.〔H. Sørensen, ''Brief introduction to the geology of the Ilímaussaq alkaline complex, South Greenland, and its exploration history,'' in GEOLOGY OF GREENLAND SURVEY BULLETIN, VOLUME 190, 2001 available online at http://www.geus.dk/publications/bull-gl/nr190/nr190_p001-023.pdf 〕
The complex is noted for a wide variety of rare minerals and is the type locality for thirty minerals, including: aenigmatite, arfvedsonite, sodalite, eudialyte and tugtupite. 〔http://www.mindat.org/loc-4302.html Mindat locality〕
The complex has an areal extent of 8 by 17 km and an exposed thickness of 1700 m. The complex includes Kvanefjeld, a uranium deposit and a large reserve of rare earth elements, zirconium, niobium and beryllium.〔
==References==
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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